一种新颖的空穴阻挡材料的合成、表征与空穴阻挡特性研究

摘要

MDBP (meta-linkage double-oxygen bridged biphenyl derivatives) is synthesized in terms of Yamamoto reaction. The analyses of cyclic voltammetry and Uv-Vis spectra indicates that MDBP has lower HOMO level (-6.12 eV) and higher oxidation potential (-2.S eV). The effect of thickness of MDBP layer and driving voltage on hole-blocking performance are discussed using multilayer organic light-emitting devices. The results indicate that the ability of blocking holes of MDBP layer depends on its thickness and driving voltage. In addition, white-light-emitting devices based on MDBP as hole-blocking laye is prepared, and its performance is also discussed.%利用Yamamoto偶联反应合成了间位连接双氧桥联的联苯衍生物(MDBP).循环伏安法及吸收光谱分析表明MDBP具有较低的HOMO能级(-6.12 eV)和较高的氧化电位(-2.5 V)；利用结构ITO/NPB/MDBP/Alq3/Li/Al的多层器件,探讨了MDBP厚度、电压对空穴阻挡性能的影响,结果表明较高电压下该材料对空穴的阻挡能力与BCP相当.并利用MDBP为空穴阻挡层制备了白光器件.